The two are literally inseparable!
Molly the Beagle lost her litter of puppies at birth.
A few days later, Molly came across a baby possum that had been abandoned by its mother.
The rest, you could say, is history.
The possum now likes to ride on Molly's back, and has been holding on tight ever since. Molly's owner says it seems the two found each other at just the right time.